<template>
  <div>
    <div>ChildA</div>
    <div>{{ store.count }}</div>
    <div>
      <a-button type="primary" @click="store.count--">我来减掉一个</a-button>
    </div>
  </div>
</template>

<script>
import { store } from "./store";
export default {
  data() {
    return {
      store,
    };
  },
};
</script>

<style></style>
